Low-complexity technique to increase capacity of mobile broadband systems

Author

Batariere, Mickael D. ; Classon, Brian K.

Author_Institution

Commun. Syst. Res. Lab., Motorola Labs, Schaumburg, IL, USA

Volume

4

fYear

2004

fDate

17-19 May 2004

Firstpage

1939

Abstract

The paper describes a low-complexity technique to increase the capacity and performance of mobile broadband systems, particularly for fast changing, highly frequency selective channels. The technique is very low complexity and can be implemented with today´s hardware at low cost. It entails minor scheduling constraints and pilot-plus-data aided channel estimation for coherent demodulation with a reduced number of pilot tones. Simulation results show a 15% spectrum efficiency improvement in the context of a high-mobility orthogonal frequency division multiplexing (OFDM) wireless communication system such as 802.20 or 4G.

Keywords

4G mobile communication; OFDM modulation; broadband networks; cellular radio; channel estimation; computational complexity; scheduling; 4G mobile systems; IEEE 802.20; OFDM; broadband cellular communication systems; coherent demodulation; fourth generation mobile systems; frequency selective channels; mobile broadband system capacity; orthogonal frequency division multiplexing; pilot-plus-data aided channel estimation; spectrum efficiency; Delay; Demodulation; Downlink; Fading; Hardware; Laboratories; Modulation coding; OFDM modulation; Quadrature amplitude modulation; Robustness;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2004. VTC 2004-Spring. 2004 IEEE 59th

ISSN

1550-2252

Print_ISBN

0-7803-8255-2

Type

conf

DOI

10.1109/VETECS.2004.1390612

Filename

1390612